Related Experiment Video
Updated: Aug 17, 2026

Murine Model of Allergen Induced Asthma
Published on: May 14, 2012
[Measurement of peak inspiratory flow with asthma: effect of inhaled beta2-stimulant]
Keiko Shimizu1, Yasuhiro Yamazaki, Nobuhito Kishimoto
1Takamatsu Municipal Hospital Division of Pharmacy.
Abstract:
This study was designed to evaluate peak inspiratory flow (PIF) and peak expiratory flow (PEF) in 24 patients with mild asthma. After inhalation of a beta2-stimulant (beta2), PIF significantly increased from 173.0 +/- 67.0 (range 70-300 L/min) to 194.0 +/- 66.7 after 1 minute, and to 199.3 +/- 63.0 after 15 minutes (p < 0.0025, and p < 0.008, respectively). PEF also significantly increased. The previous inhalation of beta2 improved the efficacy of inhalation of dry powder. This evidence should be considered in performing patient education for effective methods of inhalation.
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